Introduce distinct controlplane instance group

awx/main/models/jobs.py

@@ -1265,10 +1265,12 @@ class SystemJob(UnifiedJob, SystemJobOptions, JobNotificationMixin):
             return UnpartitionedSystemJobEvent
         return SystemJobEvent
 
+    @property
+    def can_run_on_control_plane(self):
+        return True
+
     @property
     def task_impact(self):
-        if settings.IS_K8S:
-            return 0
         return 5
 
     @property